Plate hardness detection device and detection method for furniture processing

Abstract

The invention discloses a plate hardness detection device for furniture processing and a detection method, and relates to the technical field of wood plate detection, the plate hardness detection device comprises a supporting seat and a plate, and further comprises a support fixedly mounted at the bottom of the supporting seat and a hydraulic rod fixedly mounted at the top of the supporting seat; the locking part is installed on the support and used for fixing the adjusted plate and guaranteeing the stability of the plate in the hardness testing process, the locking part comprises a supporting mechanism and a fixing mechanism, and the supporting mechanism is used for supporting the plate and meanwhile can change the height of the plate so that hardness testing can be conveniently conducted on the plates of different sizes. When the device is used for detecting the hardness of the plate, the pressing force of the pressing ball can be automatically adjusted according to the friction force between the plate and the pressing ball, and the friction force between the plate and the pressing ball is compensated, so that the pressing force of the pressing ball is kept stable, and the pressing detection accuracy of the pressing ball is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wooden board detection, and in particular to a board hardness detection device and a detection method for furniture processing. Background Art

[0002] The hardness test of the board in furniture processing is an important step to ensure the quality of furniture. The hardness test can help determine the wear resistance, durability and processing suitability of the board. At present, the Janka hardness test method is often used for the hardness test of wooden boards. The principle is to press a steel ball with a diameter of 11.28 mm into the wood surface under a certain load, usually 1000 kg, and measure the depth of the steel ball embedded in the wood or the diameter of the indentation. Usually, in order to improve the accuracy of the test, the steel ball needs to be pressed halfway into the board.

[0003] For example, announcement number CN207502328U discloses a hardness tester, which includes a tester body; a loading platform for placing samples is fixed on the tester body; a fixing component arranged on the loading platform for fixing the samples on the loading platform; the fixing component includes: a first plate body detachably mounted on the loading platform for carrying the sample; at least two clamping blocks movably mounted on the top of the first plate body, which are used to clamp or release the samples after approaching or moving away from each other; and a clamping member movably mounted on the side of the first plate body, which is used to tighten or release the samples after approaching or moving away from each other. The tester can perform stable and accurate tests on objects that need to be tested for hardness.

[0004] However, the tester still presses the measuring steel ball into the wood. Since there is static friction between the steel ball and the wooden board during the pressing process, the steel ball is pressed in with constant pressure when pressure is applied, and the influence of the friction between the steel ball and the wooden board is ignored, resulting in a certain deviation in the measured data.

[0005] Therefore, a new type of plate hardness detection device and detection method for furniture processing can be used to solve the shortcomings of the prior art. Summary of the invention

[0006] The purpose of the present invention is to solve the problem of detection deviation in the prior art and to propose a plate hardness detection device and detection method for furniture processing.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A plate hardness detection device for furniture processing, comprising a support seat and a plate, and also comprising a support seat fixedly mounted on the bottom of the support seat and a hydraulic rod fixedly mounted on the top of the support seat;

[0009] The locking part is installed on the support and is used to fix the adjustment plate to ensure the stability of the plate during the hardness test. The locking part includes a supporting mechanism and a fixing mechanism. The supporting mechanism is used to support the plate and can also change the height of the plate to facilitate hardness testing of plates of different sizes. The fixing mechanism is used to lock the plate to ensure the stability of the plate during the test.

[0010] The pressure-applying part is installed on the telescopic end of the hydraulic rod and is used to apply pressure to the plate to perform hardness testing. The pressure-applying part includes a pressing mechanism, a pressing ball and a measuring mechanism. The pressing mechanism is used to press the pressing ball into the plate to cause a depression on the surface of the plate. The measuring mechanism is used to measure the friction between the pressing ball and the plate during the pressing process.

[0011] Preferably, the support mechanism comprises a thread groove provided on the support, a pillar is threadedly rotatably mounted in the thread groove, a support plate is rotatably mounted on the pillar, and a telescopic rod 2 is fixedly mounted between the support plate and the support.

[0012] Preferably, the fixing mechanism includes two slides slidably mounted on the supporting plate, the two slides are locked to the supporting plate by a screw rod 1, the two slides are each provided with a clamping plate via two telescopic rods 1, a locking plate 1 is fixedly mounted on the two clamping plates, a locking plate 2 is fixedly mounted on the ends of the two slides, a screw rod 2 is rotatably mounted on the two locking plates 1, and a nut matching the corresponding screw rod 2 is fixedly mounted on the two locking plates 2.

[0013] Preferably, the pressing mechanism includes a docking rod fixedly mounted on the telescopic end of the hydraulic rod, a sliding rod rotatably mounted on the docking rod, a sliding sleeve slidably mounted on the sliding rod, a connecting rod fixedly mounted on the sliding sleeve, and the connecting rod is fixedly connected to the pressing ball via a docking structure.

[0014] Preferably, the docking structure comprises two connecting blocks fixedly mounted on the connecting rod, and two docking blocks matching with the connecting blocks are fixedly mounted on the press-in ball, and the two docking blocks are fixed to the corresponding connecting blocks by bolts.

[0015] Preferably, the measuring mechanism includes a fixed plate fixedly mounted on the docking rod, a rotating cylinder fixedly mounted on the fixed plate, a gear 1 fixedly mounted on the driving end of the rotating cylinder via a connecting rod, a gear 2 meshing with gear 1 fixedly mounted on the sliding sleeve, and a plurality of friction plates fixedly mounted on the pressed-in ball.

[0016] Preferably, bearing one is fixedly mounted on the docking rod, and the bearing one is divided into an outer ring and an inner ring, bearing two is fixedly mounted on the inner ring of bearing one, the docking rod is fixedly connected to the outer ring of bearing one, and bearing two is divided into an outer ring and an inner ring, wherein the outer ring of bearing two is fixedly connected to the inner ring of bearing one, the sliding rod is fixedly connected to the inner ring of bearing two, and a force distribution structure matching with the sliding sleeve is mounted on the sliding rod.

[0017] Preferably, the force distribution structure comprises two first gears and a second gear rotatably mounted on the slide bar, a mounting box is fixedly mounted on the slide bar, a wedge block 1 and a wedge block 2 cooperating with the slide bar are slidably mounted in the mounting box, two racks 1 meshing with the corresponding first gears are fixedly mounted on the wedge block 1, and two racks 4 meshing with the corresponding second gears are fixedly mounted on the wedge block 2;

[0018] Block 1 and block 2 are slidably mounted on the mounting box, and a pressure sensor is fixedly mounted between block 1, block 2 and the outer ring of bearing 2. Block 1 is fixedly mounted with two racks 3 meshing with the corresponding second gear, and block 2 is fixedly mounted with two racks 2 meshing with the corresponding first gear.

[0019] Preferably, a slideway is fixedly mounted on the slide rod, a slide groove matched with the slideway is provided on the slide sleeve, and a limit bolt matched with the slide sleeve is fixedly mounted on the slide rod.

[0020] The present invention also provides a method for detecting the hardness of a plate used in furniture processing, comprising the above-mentioned plate hardness detecting device used in furniture processing, and further comprising the following steps:

[0021] S1. Before testing the hardness of the plate, it is necessary to sample and measure the plates of the same batch to measure the friction between them and the pressing ball. The specific operation steps are as follows: first, place the plate on the support mechanism, then fix the plate through the locking mechanism, and then adjust the height of the plate through the support mechanism so that the plate is directly under the pressing ball, and the distance between the pressing ball and the plate is within the effective telescopic range of the hydraulic rod;

[0022] S2. A controller matched with the measuring mechanism is installed on the support seat. A control panel matched with the controller is fixedly installed on the support seat. The control panel also controls the hydraulic rod. After the plate is fixed, the hydraulic rod is turned on. The pressing ball is pressed into the plate through the pressing mechanism, and half of the pressing ball is pressed into the plate. Then the pressing ball is driven to rotate through the measuring mechanism. Before the rotation, the measuring mechanism measures the static friction. Once the pressing ball rotates, the static friction is converted into dynamic friction. The change of friction from the initial to the final shows a trend of gradually increasing. After the static friction is converted into dynamic friction, the friction is stable, so as to measure the friction coefficient between the pressing ball and the plate, Ff = μ*Fn. An air source pressure gauge is fixedly installed on the support seat. The force required to rotate the pressing ball can be obtained through the data on the air source pressure gauge.

[0023] S3. During the formal test, to ensure the pressure output of the hydraulic rod, it is necessary not only to apply constant pressure, but also to take into account the friction between the pressing ball and the plate. On the basis of the original constant pressure, the program is set through the control panel so that the actual pressure applied is the original constant pressure + linearly changing friction. This ensures that the pressure applied to the pressing ball is constant, and then the pressure value is read through the pressure indicator.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. When the device is testing the hardness of the plate, the measuring mechanism drives the pressing ball to rotate, measures the friction between the pressing ball and the plate, and then changes the pressing force of the pressing ball in real time according to the magnitude of the friction, to ensure that the pressing force between the pressing ball and the plate remains stable when the pressing ball is pressed into the plate. The effect of this stability is the stability after the friction is removed, which can effectively reduce the influence of friction on hardness detection, thereby improving the accuracy of detection.

[0026] 2. When the device measures the friction force of the plate, by setting wedge block 1 and wedge block 2, the reaction force generated on the sliding sleeve when the ball is pressed in can be decomposed into horizontal and vertical forces. The vertical force directly acts on the first gear and the second gear, while the horizontal force acts on bearing 1 and bearing 2, thereby achieving force distribution, ensuring the operation of bearing 2 and bearing 1, reducing the probability of derailment due to excessive force on bearing 1 and bearing 2, and effectively extending the service life of bearing 1 and bearing 2.

[0027] 3. When the device is testing the hardness of the plate, a support plate is provided to support the plate, and a fixing mechanism is used to lock the plate to ensure that the plate remains stable during the testing process, thereby avoiding the movement of the plate and causing deviation in the test result. At the same time, the height of the support plate is adjustable to ensure that the height of the plate is within the allowable telescopic range of the hydraulic rod.

[0028] To sum up, when performing plate hardness testing, the present invention can automatically adjust the downward pressure of the pressing ball according to the friction between the plate and the pressing ball, and compensate for the friction between the plate and the pressing ball, so that the downward pressure of the pressing ball remains stable, thereby improving the accuracy of the pressing ball pressure detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of a plate hardness detection device for furniture processing proposed by the present invention;

[0031] Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0032] Figure 3 for Figure 2 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0033] Figure 4 for Figure 1 Enlarged structural schematic details of the middle plate and the support;

[0034] Figure 5 for Figure 4 An enlarged structural schematic detail diagram of the middle slide plate and its surrounding components;

[0035] Figure 6 for Figure 3 A detailed diagram showing the enlarged structure of the middle hydraulic rod, the docking rod and other components installed on the docking rod;

[0036] Figure 7 for Figure 6 A detailed diagram of the structure after the hydraulic rod is removed and rotated to a certain angle;

[0037] Figure 8 for Figure 7 A detailed structural diagram after removing the rotary cylinder, connecting rod and gear 1;

[0038] Fig. 9 for Figure 8 The enlarged structural schematic detail diagram after removing the mounting box, connecting rod, pressed ball and friction plate;

[0039] Fig.10 for Fig. 9 A detailed diagram of the enlarged structure of the middle sliding sleeve and the sliding rod after they are rotated to a certain angle;

[0040] Fig.11 for Fig. 9An enlarged structural schematic detailed diagram of the middle wedge block 1 and its surrounding components;

[0041] Fig.12 for Fig.11 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0042] Fig.13 for Fig.12 Detailed schematic diagram of the exploded structure;

[0043] Fig.14 for Figure 7 A detailed diagram of the enlarged structure of the rotating cylinder, connecting rod and gear after they rotate to a certain angle;

[0044] Fig.15 for Fig.14 Detailed schematic diagram of the decomposed structure.

[0045] In the figure: 1 support seat, 2 support seat, 3 plate, 4 hydraulic rod, 5 control panel, 6 pressure indicator, 7 controller, 8 air source pressure gauge, 9 docking rod, 10 support plate, 11 slide plate, 12 clamping plate, 13 telescopic rod one, 14 screw rod one, 15 screw rod two, 16 locking plate one, 17 locking plate two, 18 rotating cylinder, 19 pressed ball, 20 friction plate, 21 connecting rod, 22 gear one, 23 installation box, 24 sliding sleeve, 25 gear two, 26 connecting rod, 27 bearing one, 28 wedge block one, 29 sliding rod, 30 rack one, 31 rack two, 32 wedge block two, 33 block one, 34 block two, 35 rack three, 36 first gear, 37 second gear, 38 rack four, 39 pressure sensor, 40 docking block, 41 telescopic rod two, 42 pillar, 43 connecting block, 44 bearing two. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1: Reference Figure 1-Figure 3 A plate hardness detection device for furniture processing includes a support base 1 and a plate 3, and also includes a support 2 fixedly installed at the bottom of the support base 1 and a hydraulic rod 4 fixedly installed at the top of the support base 1. By using the hydraulic rod 4 as a driving source, the pressure value in the hardness detection process can be observed more intuitively, thereby facilitating the acquisition of the pressure value.

[0048] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 2 , Figure 4-Figure 5The locking part is installed on the support 2 and is used to fix the adjustment plate 3 to ensure the stability of the plate 3 during the hardness test. The locking part includes a supporting mechanism and a fixing mechanism. The supporting mechanism is used to support the plate 3 and can also change the height of the plate 3 to facilitate hardness testing of plates 3 of different sizes. The fixing mechanism is used to lock the plate 3 to ensure the stability of the plate 3 during the testing process.

[0049] The supporting mechanism includes a threaded groove opened on the support 2, in which a pillar 42 is rotatably installed, and a supporting plate 10 is rotatably installed on the pillar 42. A telescopic rod 41 is fixedly installed between the supporting plate 10 and the support 2. The function of the telescopic rod 41 is to limit the supporting plate 10 and prevent the supporting plate 10 from rotating.

[0050] Place the plate 3 on the support plate 10, and then rotate the support 42. Since the support 42 and the support 2 are threadedly connected, rotating the support 42 will cause the support 42 to move on the support 2, changing the distance between the support plate 10 at the top of the support 42 and the support 2, thereby adjusting the height of the plate 3 on the support plate 10 to ensure that the height of the plate 3 is within the allowable telescopic range of the hydraulic rod 4. The hydraulic rod 4 has an optimal working extension range. Placing the plate 3 within the optimal extension range can effectively improve the operating efficiency of the hydraulic rod 4, thereby reducing the pressure error of the hydraulic rod 4.

[0051] The fixing mechanism includes two slide plates 11 slidably mounted on the support plate 10, and the two slide plates 11 are locked with the support plate 10 by a screw 14. The two slide plates 11 are each mounted with a clamping plate 12 by two telescopic rods 13. The function of the telescopic rods 13 is to limit the clamping plate 12 to prevent the clamping plate 12 from tilting or shifting. A locking plate 16 is fixedly mounted on each of the two clamping plates 12, and a locking plate 2 17 is fixedly mounted on each end of the two slide plates 11. A screw 2 15 is rotatably mounted on each of the two locking plates 16, and a nut matching the corresponding screw 2 15 is fixedly mounted on each of the two locking plates 17.

[0052] After placing the plate 3 on the support plate 10, turn the two screw rods 14 to make the slide plate 11 slide in the support plate 10 (the support plate 10 is provided with a slide groove that matches the slide plate 11, the slide plate 11 slides in the slide groove, and one end of the slide plate 11 extends out of the slide groove), adjust the position of the slide plate 11, so that the clamping plate 12 on the slide plate 11 is located above the upper edge of the plate 3, and then turn the screw rod 2 15, and the clamping plate 12 will move to the side close to the slide plate 11 under the action of the nut until the clamping plate 12 clamps the plate 3, and the plate 3 of different thicknesses can be clamped, thereby completing the fixing operation of the plate 3;

[0053] By adopting the manual adjustment method, the position of the plate 3 can be fine-tuned when clamping and fixing, so that the detection point of the plate 3 is aligned. Compared with the automatic clamping method, manual adjustment has the advantages of low cost and convenient adjustment.

[0054] Embodiment 3: This embodiment is different from the technical solution of Embodiment 2 in that: Figure 1-Figure 3 , Figure 6-Figure 15 The pressure-applying part is installed on the telescopic end of the hydraulic rod 4 and is used to apply pressure to the plate 3 for hardness testing. The pressure-applying part includes a pressing mechanism, a pressing ball 19 and a measuring mechanism. The pressing mechanism is used to press the pressing ball 19 into the plate 3 to make a depression on the surface of the plate 3. The measuring mechanism is used to measure the friction between the pressing ball 19 and the plate 3 during the pressing process.

[0055] The pressing mechanism includes a docking rod 9 fixedly mounted on the telescopic end of the hydraulic rod 4, a sliding rod 29 rotatably mounted on the docking rod 9, a sliding sleeve 24 slidably mounted on the sliding rod 29, a connecting rod 26 fixedly mounted on the sliding sleeve 24, and the connecting rod 26 is fixedly connected to the pressing ball 19 through a docking structure.

[0056] The function of the docking rod 9 is to facilitate the installation of the slide rod 29. The installation between the two can be fixed by snap-fitting, which is convenient for disassembly and installation. At the same time, the docking rod 9 can also compensate for the extension and contraction of the hydraulic rod 4 to ensure that the hydraulic rod 4 is within the optimal extension range.

[0057] A bearing 27 is fixedly installed on the docking rod 9. The bearing 27 is divided into an outer ring and an inner ring. A bearing 2 44 is fixedly installed on the inner ring of the bearing 27. The docking rod 9 is fixedly connected to the outer ring of the bearing 27. The bearing 24 is divided into an outer ring and an inner ring. The outer ring of the bearing 24 is fixedly connected to the inner ring of the bearing 27. The sliding rod 29 is fixedly connected to the inner ring of the bearing 24. A force distribution structure that matches the sliding sleeve 24 is installed on the sliding rod 29. This part means that the bearing 24 is sleeved on the inner ring of the bearing 27. The sliding rod 29 can rotate relative to the docking rod 9 under the action of the bearing 24.

[0058] The force distribution structure includes two first gears 36 and a second gear 37 rotatably mounted on the slide bar 29, a mounting box 23 is fixedly mounted on the slide bar 29, a wedge block 28 and a wedge block 32 matched with the sliding sleeve 24 are slidably mounted in the mounting box 23, two racks 30 meshing with the corresponding first gears 36 are fixedly mounted on the wedge block 28, and two racks 38 meshing with the corresponding second gears 37 are fixedly mounted on the wedge block 32;

[0059] A stop block 1 33 and a stop block 2 34 are slidably mounted on the mounting box 23, a pressure sensor 39 is fixedly mounted between the stop block 1 33 and the stop block 2 34 and the outer ring of the bearing 2 44, two rack gears 3 35 meshing with the corresponding second gear 37 are fixedly mounted on the stop block 1 33, and two rack gears 2 31 meshing with the corresponding first gear 36 are fixedly mounted on the stop block 2 34.

[0060] When the sliding sleeve 24 moves upward (the upper and lower references at this position Fig. 9 , the side close to the docking rod 9 is the upper side, and the side close to the sliding sleeve 24 is the lower side), the sliding sleeve 24 will abut against the wedge block 1 28 and the wedge block 2 32, at this time, the wedge block 1 28 and the wedge block 2 32 will decompose the pressing force of the sliding sleeve 24 against them into a horizontal force and a vertical force, and the vertical force will directly act on the corresponding first gear 36 and the second gear 37 through the rack 1 30 and the rack 4 38;

[0061] The horizontal force will drive the rack 1 30 and the rack 4 38 to move, the rack 1 30 moves to drive the first gear 36 meshing therewith to rotate, the rack 4 38 moves to drive the second gear 37 meshing therewith to rotate, and the rotation of the first gear 36 will drive the meshing rack 2 31 and the rack 1 30 to move in the opposite direction, and the rotation of the second gear 37 will drive the meshing rack 3 35 and the rack 4 38 to move in the opposite direction, thereby driving the corresponding block 1 33 and block 2 34 to move (wedge block 1 When the wedge block 28 and the wedge block 23 press against the sleeve 24, the wedge block 28 and the wedge block 23 will move away from each other, while the block 1 33 and the block 2 34 will move toward each other). As the block 1 33 and the block 2 34 approach each other, the block 1 33 and the block 2 34 will press against the corresponding pressure sensor 39. The pressure value on the pressure sensor 39 is half of the pressure when the ball 19 is pressed in (the inclined surfaces of the wedge block 1 28, the wedge block 23 and the sleeve 24 are all designed to be 45 degrees).

[0062] A slideway is fixedly installed on the slide rod 29, a slide groove matching the slideway is opened on the slide sleeve 24, and a limit bolt matching the slide sleeve 24 is fixedly installed on the slide rod 29. The function of this part is to limit the slide sleeve 24 to ensure that the slide sleeve 24 can drive the slide rod 29 to rotate and will not fall off the slide rod 29.

[0063] The docking structure includes two connecting blocks 43 fixedly mounted on the connecting rod 26, and two docking blocks 40 matched with the connecting blocks 43 are fixedly mounted on the press-in ball 19. The two docking blocks 40 are fixed to the corresponding connecting blocks 43 by bolts.

[0064] Place the press-in ball 19 under the connecting rod 26 and stick it to the connecting rod 26, align the docking block 40 with the connecting block 43, and then use bolts to connect the docking block 40 and the connecting block 43. In this way, the press-in ball 19 can be replaced. Plates 3 of different materials require press-in balls 19 of different sizes for testing, which facilitates the replacement of the press-in ball 19.

[0065] The measuring mechanism includes a fixed plate fixedly mounted on the docking rod 9, on which a rotating cylinder 18 is fixedly mounted, a gear 22 is fixedly mounted on the driving end of the rotating cylinder 18 through a connecting rod 21, a gear 25 meshing with the gear 22 is fixedly mounted on the sliding sleeve 24, and a plurality of friction plates 20 are fixedly mounted on the pressed ball 19.

[0066] The rotating cylinder 18 will drive the gear 1 22 to rotate through the connecting rod 21, and then drive the sleeve 24 to rotate through the gear 2 25, thereby driving the pressed ball 19 to rotate. The pressed ball 19 will drive the friction plate 20 to rotate to measure the friction force. The rotation of the sleeve 24 will drive the slide rod 29 to rotate, thereby driving the first gear 36, the second gear 37, the wedge block 1 28 and the wedge block 2 32 to rotate together, and the pressure sensor 39, the block 1 33 and the block 2 34 will also rotate. The pressure sensor 39 is located on the outer ring of the bearing 2 44, so it can rotate freely without getting stuck. This is also the reason why the bearing 1 27 and the bearing 2 44 are set.

[0067] The present invention also provides a method for testing the hardness of a sheet material used in furniture processing, comprising the following steps:

[0068] S1. Before testing the hardness of the plate 3, it is necessary to sample and measure the plate 3 of the same batch to measure the friction between it and the pressing ball 19. The specific operation steps are: first, place the plate 3 on the support mechanism, then fix the plate 3 by the locking mechanism, and then adjust the height of the plate 3 by the support mechanism so that the plate 3 is directly below the pressing ball 19, and the distance between the pressing ball 19 and the plate 3 is within the effective telescopic range of the hydraulic rod 4;

[0069] S2. A controller 7 matched with the measuring mechanism is installed on the support seat 1. A control panel 5 matched with the controller 7 is fixedly installed on the support seat 1. The control panel 5 also controls the hydraulic rod 4. After the plate 3 is fixed, the hydraulic rod 4 is turned on. The pressing ball 19 is pressed into the plate 3 through the pressing mechanism, and half of the pressing ball 19 is pressed into the plate 3. Then the pressing ball 19 is driven to rotate through the measuring mechanism. Before the rotation, the measuring mechanism measures the static friction. Once the pressing ball 19 rotates, the static friction is converted into dynamic friction. The change of friction from the initial to the final shows a trend of gradually increasing. After the static friction is converted into dynamic friction, the friction is stable, so as to measure the friction coefficient between the pressing ball 19 and the plate 3, Ff=μ*Fn. An air source pressure gauge 8 is fixedly installed on the support seat 1. The force required to rotate the pressing ball 19 can be obtained through the data on the air source pressure gauge 8.

[0070] S3. During the formal test, to ensure the pressure output of the hydraulic rod 4, it is necessary not only to apply constant pressure, but also to take into account the friction between the pressing ball 19 and the plate 3. On the basis of the original constant pressure, the program is set through the control panel 5 so that the actual pressure applied is the original constant pressure + the linearly changing friction, so as to ensure that the pressure applied to the pressing ball 19 is constant.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plate hardness detection device for furniture processing, comprising a support seat (1) and a plate (3), characterized in that: It also includes a support (2) fixedly mounted on the bottom of the support base (1) and a hydraulic rod (4) fixedly mounted on the top of the support base (1); A locking portion, mounted on the support (2), is used to fix the adjustment plate (3) to ensure the stability of the plate (3) during the hardness test. The locking portion comprises a supporting mechanism and a fixing mechanism. The supporting mechanism is used to support the plate (3) and can also change the height of the plate (3) to facilitate hardness testing of plates (3) of different sizes. The fixing mechanism is used to lock the plate (3) to ensure the stability of the plate (3) during the test. The pressure-applying part is installed on the telescopic end of the hydraulic rod (4) and is used to apply pressure to the plate (3) to perform hardness testing. The pressure-applying part comprises a pressing mechanism, a pressing ball (19) and a measuring mechanism. The pressing mechanism is used to press the pressing ball (19) into the plate (3) to cause a depression on the surface of the plate (3). The measuring mechanism is used to measure the friction between the pressing ball (19) and the plate (3) during the pressing process.

2. The plate hardness detection device for furniture processing according to claim 1, characterized in that: The support mechanism comprises a thread groove formed on a support (2), a support column (42) being threadedly rotatably mounted in the thread groove, a support plate (10) being rotatably mounted on the support column (42), and a second telescopic rod (41) being fixedly mounted between the support plate (10) and the support (2).

3. The plate hardness detection device for furniture processing according to claim 2, characterized in that: The fixing mechanism comprises two slide plates (11) slidably mounted on the support plate (10), the two slide plates (11) and the support plate (10) are locked by a screw rod (14), the two slide plates (11) are each mounted with a clamping plate (12) by means of two telescopic rods (13), the two clamping plates (12) are each fixedly mounted with a locking plate (16), the ends of the two slide plates (11) are each fixedly mounted with a locking plate (17), the two locking plates (16) are each rotatably mounted with a screw rod (15), and the two locking plates (17) are each fixedly mounted with a nut matched with the corresponding screw rod (15).

4. The plate hardness detection device for furniture processing according to claim 1, characterized in that: The pressing mechanism comprises a docking rod (9) fixedly mounted on the telescopic end of the hydraulic rod (4), a sliding rod (29) rotatably mounted on the docking rod (9), a sliding sleeve (24) slidably mounted on the sliding rod (29), a connecting rod (26) fixedly mounted on the sliding sleeve (24), and the connecting rod (26) fixedly connected to the pressing ball (19) via a docking structure.

5. The plate hardness detection device for furniture processing according to claim 4, characterized in that: The docking structure comprises two connecting blocks (43) fixedly mounted on the connecting rod (26), and two docking blocks (40) matched with the connecting blocks (43) are fixedly mounted on the press-in ball (19), and the two docking blocks (40) are fixedly mounted to the corresponding connecting blocks (43) by bolts.

6. The plate hardness detection device for furniture processing according to claim 4, characterized in that: The measuring mechanism comprises a fixed plate fixedly mounted on a docking rod (9), a rotating cylinder (18) fixedly mounted on the fixed plate, a gear 1 (22) fixedly mounted on the driving end of the rotating cylinder (18) via a connecting rod (21), a gear 2 (25) meshing with the gear 1 (22) fixedly mounted on the sliding sleeve (24), and a plurality of friction plates (20) fixedly mounted on the pressed-in ball (19).

7. A plate hardness detection device for furniture processing according to claim 4, characterized in that: A bearing 1 (27) is fixedly mounted on the docking rod (9), and the bearing 1 (27) is divided into an outer ring and an inner ring. A bearing 2 (44) is fixedly mounted on the inner ring of the bearing 1 (27). The docking rod (9) is fixedly connected to the outer ring of the bearing 1 (27), and the bearing 2 (44) is divided into an outer ring and an inner ring, wherein the outer ring of the bearing 2 (44) is fixedly connected to the inner ring of the bearing 1 (27). The sliding rod (29) is fixedly connected to the inner ring of the bearing 2 (44), and a force distribution structure matching the sliding sleeve (24) is mounted on the sliding rod (29).

8. The plate hardness detection device for furniture processing according to claim 7, characterized in that: The force distribution structure comprises two first gears (36) and a second gear (37) rotatably mounted on a slide bar (29); a mounting box (23) is fixedly mounted on the slide bar (29); a wedge block 1 (28) and a wedge block 2 (32) matched with a slide sleeve (24) are slidably mounted in the mounting box (23); two racks 1 (30) meshing with the corresponding first gears (36) are fixedly mounted on the wedge block 1 (28); and two racks 4 (38) meshing with the corresponding second gears (37) are fixedly mounted on the wedge block 2 (32); A first block (33) and a second block (34) are slidably mounted on the mounting box (23); a pressure sensor (39) is fixedly mounted between the first block (33) and the second block (34) and the outer ring of the second bearing (44); two racks (35) meshing with the corresponding second gear (37) are fixedly mounted on the first block (33); and two racks (31) meshing with the corresponding first gear (36) are fixedly mounted on the second block (34).

9. The plate hardness detection device for furniture processing according to claim 4, characterized in that: A slideway is fixedly mounted on the slide bar (29), a slide groove matching the slideway is provided on the slide sleeve (24), and a limit bolt matching the slide sleeve (24) is fixedly mounted on the slide bar (29).

10. A method for detecting the hardness of a sheet material used in furniture processing, used in the device for detecting the hardness of a sheet material used in furniture processing as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Before testing the hardness of the plate (3), it is necessary to sample and measure the plates (3) of the same batch to measure the friction between them and the pressing ball (19). The specific operation steps are as follows: first, the plate (3) is placed on the support mechanism, and then the plate (3) is fixed by the locking mechanism, and then the height of the plate (3) is adjusted by the support mechanism so that the plate (3) is directly below the pressing ball (19), and the distance between the pressing ball (19) and the plate (3) is within the effective telescopic range of the hydraulic rod (4); S2. A controller (7) matched with the measuring mechanism is installed on the support seat (1). A control panel (5) matched with the controller (7) is fixedly installed on the support seat (1). The control panel (5) also controls the hydraulic rod (4). After the plate (3) is fixed, the hydraulic rod (4) is turned on, and the pressing ball (19) is pressed into the plate (3) through the pressing mechanism, and half of the pressing ball (19) is pressed into the plate (3). Then, the pressing ball (19) is driven to rotate through the measuring mechanism, and the rotation of the pressing ball (19) is performed. Before, the measuring mechanism measures the static friction force. Once the pressed ball (19) rotates, the static friction is converted into dynamic friction. The change of the friction force from the initial to the final value shows a trend of gradually increasing. After the static friction is converted into dynamic friction, the friction force is stable, and the friction coefficient between the pressed ball (19) and the plate (3) is measured, Ff = μ*Fn. The support seat (1) is fixedly mounted with an air source pressure gauge (8), and the force required to rotate the pressed ball (19) can be obtained through the data on the air source pressure gauge (8); S3. During the formal test, to ensure the pressure output of the hydraulic rod (4), not only constant pressure is required, but also the friction between the pressing ball (19) and the plate (3) needs to be taken into account. On the basis of the original constant pressure, the program is set through the control panel (5) so that the actual pressure applied is the original constant pressure + the linearly changing friction, so as to ensure that the pressure applied to the pressing ball (19) is constant.

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